排序 插入排序

Posted 2022-03-22 thefist11

1. 思想

将无序区的数据插入到有序区

void insertionSort(int arr[], int len) 
    for (int i = 1; i < len; i++) 
        int key = arr[i];
        int j = i - 1;
        while ((j >= 0) && (key < arr[j])) 
            arr[j + 1] = arr[j];
            j--;
        
        arr[j + 1] = key;